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Date:      Wed, 8 Feb 2012 13:26:33 -0600 (CST)
From:      Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
To:        Tom Vier <nester@gmail.com>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: zfs checksums on non-raidz
Message-ID:  <alpine.GSO.2.01.1202081324090.21595@freddy.simplesystems.org>
In-Reply-To: <20120208184728.GH6814@zero>
References:  <20120208184728.GH6814@zero>

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On Wed, 8 Feb 2012, Tom Vier wrote:

> In mirror and single dev zpools, are data and metadata still checksummed, or
> only when using raidz?

Checksums are done at the decoded/reassembled filesystem block level 
(e.g. 128K) so they are performed regardless of the underlying storage 
topology or compression used.  Checksums are still in effect even if 
there is no data redundancy.

Bob
-- 
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/



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